Printing machine



Aug. 22, 1933. J, KRELL PRINTING MACHINE Filed Jan. 15, 1952 4Sheets-Sheet l W @am In R u. iN INM WINE,

om 5 QN vvv Aug. 22, 1933.

J. KRELL PRINTING MACHINE f Filed Jan. 15, 1952 4 Sheets-Sheet 2 by mwy@ Aug. 22, 1933. J KRELL' 1,923,492

PRINTING MACHINE Filed Jan. 13, 1932 4 sheets-'sheet s Affys.

J. KRELI. 1,923,492

PRINTING MACHINE Aug. 22, 1933.

Filed Jan. 13, 1932 4 Sheets-Sheet 4 Patented Aug. 22, i933 PRINTINGMACHINE Joseph Krell, Berlin-Zehlendorf, Germany Application January 13,1932, Serial No. 586,391, and in Germany January 2,3, 1931 4 Claims.

My invention relates to printing machines, and more particularly toaddress-printing machines having a rockin.g printing arm, a holder forthepaper on which the addresses are printed, and 5 means for feeding thepaper holder longitudinally and transversely under the control of theprinting arm and in time with its `rocking movements. Y

A machine of this general type is described in (zo-pending applicationfor patent of the United States, Ser. No. 387,530, led Aug. 21, 1929,for Printing machine.

In this machine a: very complicated mechanism is provided for operatingthe feeding means from the printing arm and it is an object of myinvention to simplify this mechanism.

To this end I provide a rocking lever which is operatively connected tothe printing arm and to the feeding means, in combination with means forrocking the lever only during the ascent of the printing arm. n

Inmachines of the type referred to, it has already been proposed toprovide two sectors for v effecting the longitudinal and transverse feedof the paper, as described in my said co-pending application. The twosectors are arranged side by side in a frame and are rocked in time withthe movements of the printing arm through the mechanism of the machine.As mentioned, the 3 mechanism for operating the two sectors is Verycomplicated in this machine and is much simplifled according to mypesent invention, The rocking lever may be mounted on a horizontal shaftin the frame of the machine, and equipped with a slot which isconcentric to the axis about which the printing arm rocks. RockingInovement is imparted to the rocking lever by mechanism operated uponeach ascent of the printing arm, the lever being rocked alternately inopposite directions. Upon the descent of the printing arm the lever isnot operated but maintains altogether or substantially the position itassumed when the printing arm started for its ascent.

1n a preferred embodiment oi my invention, I arrange a shaft on theprinting arm, as described in my said copending application, which isrotated through 180 degs. per ascent of the printing arm, in the samedirection, and a crank pin or equivalent means arranged eccentricallyAwith respect to the axis oi the shaft and engaging in the slot of therocking lever.

It is another object of my invention to pro-v throwing out the printingarm if it is desired not to print a certain printing plate, or plates.

To this end, in combination with the printing arm on which the platensare arranged and which is mountedto rock in the frame oi the machine, 1provide a clutching member which mounted to rock on the printing arm andis continuously operated from the driving shaft of the machine,

a clutch for connecting the member to the printing arm, and means forthrowing out the clutch in the elevated position of the printing armwhen it is desired to skip a given plate. Normally a control magnetholds its armature attracted and the armature, in turnholds the clutchin active position. When a plate is to he skipped, the magnet isde-energized and releases its armature and the clutch. is thrownout.

VSkipping or selecting means of this type is simple and reliable andpermits a simple design for the means by which the feed of the paper iscontrolled.

In the accompanying 'drawings an address printing machine embodying myinvention is illustrated by Way of example.

In the drawings:

Fig. 1 is a partly sectional elevation showing a portion of the machine,with the printing arm elevated,

Fig. 2 shows a detail of the skipping or selecting 35 means, y

Fig. 3 is a plan View of Fig. 1, with the printing arm lowered,

Fig. 3a is a section on the line IlIIa-IIIa in Fig. 3,

Fig. 4 shows the printing varm lowered for printing a printing plate forthe first time,

Fig. 5 shows the arm elevated for the second print from the plate afterthe paper has been fed 95 transversely,

Fig. 6 is an elevation of the elevated printing yarm ready for skipping,

Fig. '7 shows the skipping means after the driving shaft has turnedthrough about 180 degs. 100 from the position in Fig. 6,

Fig. 8 is an elevation oi the lowered printing arm, viewed from theright 'in Fig. 1, and

Fig. 9 is a section on the line IX--IX in Fig. 4.

Referring now to the drawings, and Iirst to Figs. 1 and 3, l is thetable of the machine, 2 is the printing arm, and 3 is a pin about whichthe arm is mounted to rock. The frontend of the arm has a fork 2, with ashaft 13, and its rear and has a fork 2'", with a Shan 4 on which the11,0

able means such as the pulley 89, Fig. 9, and 62 is a connecting rodextending from the crank of the shaft 63 to a pin 62" at the'lower endof the clutching member 61, as best seen in Fig. 7. 85, Fig. 2, is thecontrol magnet of the skipping means, 86 is its armature, and 90 is ahook for holding the armature in attracted position. 84 is a spring,Fig. 1, which is attached to the tail 2I and tends to elevate the arm 2.

53 is a frame in which a lower slide 48 is mounted to reciprocate, asdescribed in my said co-pending application, 49 is the upper slide whichis mounted to reciprocate transversely on the lower slide 48, 125 is thepaper-holding rod which is attached to the upper slide 49, 127 is apaper holder at the rear end of rod. 125, 131

' is a clamping cylinder for the paper 126, and 128 is a handle forapplying the cylinder to the paper.

The platens 6 and 7 at the turret head 5 are arranged at an angle of 90degs. to each other. The turret head is mounted to rotate freely aboutthe shaft 4 and at its outer end is equipped with a tubular shaft 5",Fig. 3, on which a notched disk 5' is secured outside the fork 2'. 9, isa bell crank on the outer end of shaft 4. The disk 5 is notched at 8,22kand 23, and 8 is a pin at the end of bell-crank arm 9 which engagesin-the notch 8 so that the turret head is entrained if the bell-crank 9,10 is rocked by means which will be described. The notches 22 rand 23are pitched at 90 degs. in conformity with theposition of the printingplatens 6 and 7, and 24 is a spring catch, on a pivot 25, for securingthe turret head 5 in two positions at 90 degs. to each other. 26 is asector-shaped cam, the radius of which is somewhat larger than that ofdisk 5. `The cam is positivelyconnected to the bell crank 9, 10 and asoften as the bell crank rotates, engages below the end of catch 24 torelease disk 5 and to permit the turret head to turn into the nextposition in which it is locked by the catch re-engaging the notch 22 or23, as the case may be.

Mounted on the outer end of shaft 13 is a crank 12 which is connected tothe arm 10 by a rod l1. 14 is a disk onthe shaft 13 which has twonotches 15 and 16 in diametrally opposite positions, 19 is a pinionwhich is free to rotate Aon shaft 13, 18 is an arm on the pinion, and 17is a pawl at the outer end of arm 18 which engages alternately in one ofthe notches 15, 1F, Fig. 3a.

. Mcshing with the pinion 19 is a rack 20 which is held by a roller 21at the fork 2, Fig. 3, and at its lower end is pivoted to bell-crank arm27. 32 is a bracket on the lower face of table 1 and 31 is a link whichconnects the arm 28 to the bracket. It will be understood that While thearm 28 is held in a definite position by the link 31, its pivot 29 rockswith the tail 2 of the printing arm 2.

Mounted to rotate in the bracket 32 and a bracket 32', Fig. 8, is theshaft 33 of an upwardly extending rocking lever 34 which at its upperend has a slotted eye 35 curved concentrically to the axis about whicharm 2 rocks. 37 is a disk on the end of shaft 13 which projects beyondthe outer arm of fork 2, 36 is a crank pin on the disk which engages inslotted eye 35; 38, 39 are lugs arranged diametrally opposite on thedisk 37, and is a checkprojectingupwards from table 1 for arresting thelugs in the two final positions of the disk 37.

41 is a lever on the inner end of shaft 33 to which the rear ends of twolinks are connected. The front end of link 42 is pivoted to anadjustable block 42 at the arm 45 of a sector 45, and the front end oflink 43 is pivoted to a similar block 100 on an arm of a sector 100 atthe rear of sector 45, bothsectors being mounted on the same shaft 44.The sector 45 meshes with a rack 46 mounted to slide in frame 53. Therack is connected to the lower slide 48 by a pawl, as described in mysaid co-pending application, so that the lower slide 48 is fed only inthe direction of the arrow 47 if the sector 45 rotates in the 4directionof arrow 47', Fig. 5, while for the opposite rotation of the sector 45only the rack 46 is entrained but not the slide 48.

The sector 100 cooperates with a rack 111 which has teeth 110 at bothends at right angles to the teeth with which the sector 100 meshes.

As described in my said co-pending application, the feeding means aresubdivided as follows:

1. The lower or principal slide 48 actuated by sector 45;

2. The upper slide 49 which is mounted to be displaced transversely onslide 48; y

3. A sleeve 50 in the upper slide 49, with a bolt 5l and a set screw forholding the rod 125.

54 is a straight-edge which is fulcrumed on the lower slide 48 at 55andis engaged by anges at the lower end of sleve 50 so that the position ofthe slide 49 on the slide 48 is determined by the inclinationofstraight-edge 54 and the position of the sleeve 50 on the straight-edge.The free end of the straight-edge is guided in a slot 56 in which it maybe fixed in any desired position by suitable means such as a thumb nut,not shown. Meshing with the teeth at the ends of rack-111 are pinions112 on Vertical shafts 113, each with a crank 114 which is slotted forthe reception -of an adjustable crank pin 115 on each pinion. The cranksare pivotally connected to blocks117 in arod 118 which is slotted fortheir reception at 117 and equipped'with rollers 119 at its ends whichbear on the cross bars D and E of frame 53. indicated by arrow 57. 120is a pin connecting the rod 118 to a double-armed lever 121 which isfulcrumed on the frame 53 at one end and at its other end is connectedto a bracket 124 on the upper slidey 49 by a link 123. f

When the rod 118 is reciprocated the upper slide 49 is reciprocatedtransversely to the direction in which the lower slide 48 is fed, and atthe same is displaced longitudinally by its engagement withstraight-edge 54. This may be desirable under certain conditions, forinstance, 1

if the two prints from the same plate of which individual lines areprinted, are juxtaposed on the paper 126. If the straight-edge is placedin fiuenced during its reciprocation.

The clutch by which the clutching member 61 and the tail 2 areconnected, is a pin 64, Fig. 9, which is adapted to enter a sleeve 64 inthe member 61 under the pressure of a spring 65, and 66 is a notch, witha cam face 67, at the free end of kparallel to the sides of slide 48 itwill not be inpin 64. 68 is a clutch-operatng lever which is free toturn on pin 3 and has a cam 69 for cooperation with the cam face 67. 72is a shaft in the frame of the machine, 83 is a spring wound about theshaft and tending to rotate it clockwise, 71 is an arm on the shaft, and79 is a link by which the arm is connected to the operating lever 68. 81is a cam plate which secured on the driving shaft 63 and rotates in thedirection of arrow 88, Figs. 1 and as the shaft rotates, 79, 79' is adouble-arined lever which is free to turn on shaft 80 is a rolle?.` onthe arm 79, and 82 is a spring tending 'to hold the roller engaged withcam 81. 73 is a ixed arm. on the shaft 72, and 77 is a pin at the arm 73which engages in asl-ot 78 in the arm 75 is a par-.fl at the lower endof arm 73, and 75 is a spring tending to move the pawl into engagementwith step at the lower end of arm 79. 76 is a fixed check .ior throwingout the pawl 74 in certain positions@ The opera on ci my machine is asfollows:

d l, 'be a pr.A ting plate which has fed to the printing station belowthe platens 6, 7 on means, not shown, and from which the v first print`is to be made by platen 6 on the paper 126 when the 2 The controlmagnet 86 which engages holds the clutch operating lever 63 by a lug, asbest seen in 2.

is driving shaft 63 rotates it moves the printing arm 2 into theprinting position, Fig. 4, whereupon the raised portion of cani plate 81bears on the roller 80 of arm 79 and moves the double-armed lever 79, 79into the position Fig. 2. Spring 83 tends to rotate the shaft 72 inthedirection of arrow 91 so that the arms 71 and 73 follow the rockingmovement of donbleearmed lever 79, 79 in the san direction and arm 71operates the lever 68 'through link 79. However, the lever 68 is heldthe lug on the armature 86 and the arms 71, 73 cannot follow the double`armed lever 79, 79', while the pin 77 on arm 73 moves in the slot 78.The clutch 64 is not iniiuenced by its lever 68.

as the printing arm 2 descends the rack 26 rises under the action ofbell crank 27, 28 and the pinion 19 on the shaft 13 rotates in adirection opposite to that indicated by the arrow 93, Fig. 3a. The pawl17 at the arm 18 which rotates with the pinion, leaves the notch 16 disk14 and engages the notch at the in nt tho printing arm arrives in itslowermost position. The shaft 13 is not rotated and the disk 37 on theouter end of the shaft remains in the position l, so that the rockinglever 34 on the shaft 33 is not influenced while the printing 2 movesfrom the position 1 into the position Fig. 4. Nor are the sectors and169 operated. A certain amount of movement of pin 36 on disk 37 mayoccur as the slotted eye 35 of the rocking lever 34 is curved about theabout which the printing arm rocks, and the pin some play in the slot.

When the printing arm is in its lowermost po- Fig. t e plate 87 isprinted on the paper The con .iued rotation of shaft 63 causes the link62 to pull the member 61 to the rear, elevating the printing Rack 20descends, pinion 19 rotates the direction of arrow 93, 3ft, and theshaft 13 is turned through 180 degs. by the disk 14. The arm l2 on theinner end of shaft 13 turns the turret head 5 from the position 4 intothe position Fig. 5 and moves the platen 7 into printing position. Cam26 pushes catch 24 out of notch 22 and pin 8 on the 'turret head 5 byany sui'dablel head is not turned on its shaft 4.

bell-crank arm 9 turns the turret head through 99 dogs. by the notch 8.

The rotation oi'shaft 13 in the direction 93 Vcauses the disk 37, withits pin 36, to rotate from the position Fig. 4 into the position 5, andthe rocking lever 34 is moved to the left, rotating shaft 33 in thedirection 94, Fig. .Arm 41 on shaft 33 now operates the sectors 42 and43 in a direction opposite to that indicated by the a1'- row 47', Fig.5, to move the rack 46 and the lower slide 48 toward the printing arm 2.At the same time, the sector 100 causes the upper slide 49 to move inthe direction of arrow 57, Fig. 3, so that the paper .1.26 is displacedand the plate 87 is printed at the side of the iirst impression.

Overthrowing of shaft 13 upon the ascent of printing arm 2 is preventedby the lugs 38, 39 on disk 37 and the check 40.

The position of clutch-operating lever 68 is not altered when theprinting arm 2 descends from the position in Fig-5.

When a given plate 87 has been printed twice and the next plate is fedto the printing station, the magnet is excitedunless this plate is to beskipped, the rack 28 rotates the shaft 13 in the direction 93 asdescribed and the turret head 5 is turned so as to present the platen 6,Fig. 1 whileat the same time the sectors 45 and are rocked from theposition in Fig. 5 into the position in Fig. 1 in the direction 47'.causes the lower slide 48 to move in the direction 47, Fig. 1, for thepitch of two lines, so that upon the subsequent descent of the printingarm another line of the list is printed on the paper 126 while thesector 190 by rocking in the direction 47 causes the upper slide 49 withthe sleeve 50 to return into the position Fig. 3 so that the iirst printof the new plate 87 is below the nrst print of the preceding plate.

1i it is desired to skip a plate the control magnet 85 is not excitedwhen the printing arm ascends, or rie-energized when the printing arm isin its elevated position, Aand the armature 86 is not attracted. Theconsequence is that when the raised portion of cam plate 81 strikes theroller 80 on the arm 79` and rocks the double--r armed lever 79, 79 intothe position'liig. 6, spring 83 rocks shaft 72 in the direction 91 withthe arms 71 and 78 so that the clutch-operating lever 68 is rocked indirection 96, Fig. 2, by the link 70 and with its cam 69 engages in thenotch 66 of clutch 64, retracting the clutch in direction 97 andbreaking the connection of member 61 and tail 2. Spring 84 holds the armin its elevated position while the member 61 rocks idly as the shaft 63rotates, Fig. 7. As the printing arm remains in elevated position thepinion 19 on shaft 13 is not influenced and in turn doesV not influencethe feeding means, and the turret When the member 61 is again in theposition Fig. 6, and the clutch 64 re-enters the bush 64 in the arm 61.`The clutch-operating lever 68 does not interfere with the re-connectionof the tail 2' andthe member 61 as at the moment when the member 6l isin its nal position, Fig. 6, the double-armed lever 79, 79 is engaged bythe lower portion of cam plate 81 so that the link 70 moves theclutchoperating lever 68 against arrow 96, Fig. 2.

1i the subsequent plate 87 is also to be skipped, the member 61 isdisconnected from tail 2 when the shaft 68 rotates, by retracting theclutch 64. If the subsequent plate 87 is to be printed the connectionbetween 61 and 2 is maintained by the excited control magnet 85, asdescribed.

This

lili) When the clutch-operating lever 68 is rotated in the direction 96,Fig. 2, as shown in Fig; 6, the pawl 74 leaves the check 76 so that thelever 79, 79 and the arm '73 are rigidly connected during, and for thepurpose of, unclutching, which is desirable.V When the arm '73 returnsinto the position Fig. 7 the check '76 causes the pawl 74' to move outof engagement with lever arm 79.

I claim:

1. A printing machine comprising a rocking printing arm, means foractuating said arm, a paper holder, means for feeding said paper holderlongitudinally and transversely, a feed-controlling member on saidprinting arm, means for operating said member at each ascent of saidprinting arm, a rocking lever'operatively connected to saideeding means,and a connection between said member and said rocking lever which isadapted to rock said lever only during the ascent oi said printing arm.

2. A printing machine comprising a rocking printing arm, means foractuating said arm, a paper holder, means for feeding said paper holderlongitudinally and transversely, a shaft on said printing arm, means forrotating said shaft at each ascent of said printing arm, a rocking leveroperatively connected to said feeding means, and a connection betweensaid shaft and said lever which is adapted to rock said lever onlyduring the ascent of said printing arm.

3. A printing machine comprising a rocking printing arm, means foractuating said arm, la paper holder, means for feeding said paper holderlongitudinally and transversely, a shaft on said printing arm, a bellcrank lever fulcrumed on said printing arm, means for holding one arm ofsaid bell-crank lever against rocking about its fulcrum, means connectedto the other arm for rotating said shaft at each ascent of said printingarm, a rocking lever operatively connected to said feeding means, and aconnection between said shaft and said lever which is adapted to rocksaid lever only during the ascent of said printing arm.

f 4. A printing machine comprising a rocking printing arm, means foractuating said arm, a paper holder, means for feeding said paper holderlongitudinally and transversely, a shaft on said printing arm, means forrotating said shaft at each ascent of said printing arm, a rocking leveroperatively connected to said feeding means, said lever having a slotcurved concentrically to the axis about which said printing arm rocks,and a crank pin on a disk of said shaft engaging in the slot.

JOSEPH KRELL.

